Cooling device



I F. n. HowE;

cooLING DEVICE. Y

APPLICATION FILED AUG.3I. 1916.

1,400,878 PatentedDec. 20, 1921*.,

HI will II, ,im MIMI IIIIII( It 'III "I *gn II' Iman/C?? raras-ir FRANK D. HOWE, 0F AKRON, OHIO, ASSIGNGBI, BY TIIESNEYASSIGNMENTS, TO INTER# NATONAL-HARVESTEB. COMPANY, A CORPORATION 0l? NEVI JERSEY.

COOLING- DEVICE.

raconte.,

Specification of Letters Patent. Pgmjgmtd D690. 20, 1921.

Application filed August 31, 1916. Serial No. 117,387.

To all whom it may concern Be it known that l, FRANK D. Hows, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented certain new and useful improvements in Cooling Devices, of which the following is a full, clear, and exact specification.

This invention relates to cooling devices.

One of the objects of the invention is to improve the eciency of cooling devices.

Another object is to simplify and improve the general arrangement of cooling devices as used particularly in connection with engines for propelling motor vehicles.

Another object is to provide a cooling system for motor vehicle engines and the like adapted to meet all the requirements for successful commercial operation.

'llhese and other objects are accomplished by providing the combination of a tank Vfor receiving` a fluid to be cooled, cooling tubes extending through the tank, and means in the tank causing the fluid to take a prolonged path in intimate contact with said tubes.

The invention is illustrated on the accompanying sheet of drawings, in which- Figure 1 is a fragmentary side elevation of a motor vehicle engine, the` water jacket of which is connected to my improved cooling device, parts of which are shown in vsection; 4

Fig. 2 is a rear elevation of my cooling device; and

Fig. 3 is a top plan view, yparts being in section, showing the arrangement of the cooling tubes and the diaphragm forl causing the iiuid to be cooled to take a prolonged path in contact with the tubes.

The various novel features of my invention will be apparent from the following description and drawings and will be particularly pointed out in the appended claims.

` l have chosen to illustrate my invention in connection with an internal combustion engine 10 which is used for propelling a motor vehicle, said engine `having its cylinders water-cooled, the water jacket '11 having a cold water inlet 12and a hot water outlet '13. As is well understood, the hot water passing out of the water jacket of an engine is passed through a cooling device where the heat is removed, the water again, in a cooled state, passing into the lower part of the water jacket, as in the thermo-Siphon system. My radiator or cooling device includes an outer casing la which is substantially closed, there being,"however, a circular opening 15 in the rear wall of the casing, Yin the neighborhood of which a fan 16 is driven from the engine 10 through a suitable driving connection 17. The upper front portion of the casing is also provided with an opening in which is located a screen 18 which permits the passage of air therethrough for cooling purposes. The radiator also includes upper and lower compartments or water tanks 19 and 20 which are connected by suitable vertically arranged pipes 21. For the most part the tanks .19 and 2O and pipes 21 are spaced from the casing 14 to permit circulation of air therebetween. lThe engine water jacket 11 and the radiator are filled with water by pouring the 'same' through the upper neck portion 22 of the casing 14e when the cap' 23 is removed therefrom, there being a suitable overflow pipe 24, the upper end of which is in the neck portion 22 and the lower end of which overlow pipeextends to a convenient point of exit where water drippingout willvnot be objectionable. j

1n water cooling systems for motor vehicle engines, it is realized by all that unless some special precaution is taken, the engine cooling water will boil away rapidly, causing the many well known troubles which follow. This cooling water, which becomes heated' to an extremely high degree in water jackets, has a great tendency to, and in a greatmany cases does,` bubble and spout over into the overflow pipe, causing a considerable loss of the water; At the same time a considerable amount of steam is carried away in excess to the overliow pipe in many cooling systems now employed. It is this undesirable waste of water and steam which, among other things,l have attempted to overcome.

To accomplish this result and to render more efficient the cooling of the fluid for the purpose of maintaining enginesin a relatively cool and economical opera-ting condition, l have provided the upper compartment or watery tank with a plurality of longitudinally extending tubes 25 through which a cooling fluid, such as air, may pass. The frontend of these tubes register with the screen portion 18 of the' outer casing so that air forced through the tubes may ,take direct path through the tank. A. relatively large number of these air tubes 25 are Vprovided so that the hot water passing into the upper tank 19 will necessarily-V come into fairly intimate contact with these tubes which have a cooling effect upon the water.' It Vis desirable to improve the eliiciency of the radiator orvcooling device by causing the hot water to'remain in intimate contact with the, cooling tubes as long as possibile. For this reason I have provided a baille 26 in the Y form of a plate or partition which is located in the upper tank` 19 and runs transversely to the air 'tubes 25, the ends of the baille, however, being spaced fromr the outer ends of the upper tank 19. This baille is also lo- Vvcated slightly in therear of the vvertical water pipes 21 which connect the upper and lo-werkwater tanks 19 and 20. By means of this arrangement it is, apparent, reference being had particularly to Figs. 2 and 3, that the hot water, which passes out fromthe 'engine water jacket through the pipe 13. and through the connection'27, enters theupper tank 19 of the radiator through the conduit 28 leading into the central rear portion of the tank 19. This hot Vwaterimmediately is caused to branch in opposite :directions by the position of the baffle 26,V the water' passing transversely with respect to the air tubes 25, by means of which the water is cooled. This water passesfoutwardly to either side at the rear of the baffle in intimate contact with the air tubes untilit roaches the ends of the baille, whereupon the water then passes in-V V*intothe overflow pipe and at the same time most of the steam which accompanies the hotl water is condensed so that even under theV Y most severe operating conditions a relatively small amount of steam passes outthrough the overflow pipe 24. 1

Y The cooling airis drawn through the screen 18 through the air tube 25 and Vmit through the rear opening 15 by the fan 16.'

At the same time air passes downwardly around `thewater pipes 21 and around-the lower water tank 20 and then out through the opening 15, whereby all parts of the water circulating system are maintained relatively cool in a most eiiicient manner.

It is evident that there, may be various modifications of my invention as herein particularly shown and described, and it is my intention to cover all such modifications Awhich do not involve a departure from the spirit and scope of my invention as set forth inthe following claims.

What I claim is: Y

1. A'cooling device, for internal combustion engines having Lipper and lower compartments, a plurality of horizontal cooling tubes in the upper compartment, a vertical baffle plate extending transversely of the cooling tubes and dividing the upper compartment into front and rear chambers communicating at the ends of the baille, an inlet for the rear chamber and an outlet for the lower compartment adapted for connection to the waterjacket of an engine, and vertically disposed cooling passages connecting the front chamber and lower compartment, whereby hot cooling water or steam from the water jacket will first enter the rear sov chamber and be directed by lsaid bafli'e into contact with the horizontal cooling tubes be fore passing to the front chamber.

2. A cooling device for internalcombustion engines having upper and lower compartments, a plurality of horizontal cooling tubes in the upper compartment, a vertical baiile plate extending transverselyl of the cooling tubes and dividing the upper compartment into front and rear chambers communicating at the ends of the baille, a filling opening for Vthe front chamber, an inlet for the rear chamber and an outlet for thev lower compartment adapted for connecition to the water jacket of an engine, and

vertically disposed cooling passages connecting Athe front chamber and lower compartment, wherebyv hot water from the jacket entering the rear chamber is directed Vagainst the cooling tubes and cooled below the point of ebulition before entering the front chamber. Y Y

3. A cooling device for internal combustion engines having upper and lower com-y partments, a plurality of horizontal cooling tubes in the upper compartment, a vertical Vbaille plateY extending transversely of the cooling tubes anddividing the upper compartment into front and rear chambers Acommunicating at the ends of the baffle, an inlet for the rear chamber and anl outlet for the lower compartment adapted for connection to the water-jacket of an engine, the front chamber being in openl communication with the atmosphere, vertically disposed cooling passages connecting the front chamber and lower compartment, and means for directing a cooling agent through the horizontal tubes whereby hot cooling water Orysteam from the water-jacket willv first enter the 10 a plurality of passages aifording communication between one of the chambers and the lower compartment, an outlet for the lower compartment, an inlet opening into the other chamber whereby hot fluid owing therethrough will be directed by said bathe 15 or partition along the cooling passages before entering the adjacent chamber.

In testimony whereof I affix my signature.

FRANK D. HOWE. 

